:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --background-color: #ecf0f1;
    --text-color: #34495e;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    line-height: 1.6;
}

.kinematics-container {
    background-color: white;
    padding: 30px;
    border-radius: 15px;
    max-width: 800px;
    margin: auto;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.input-section {
    margin-bottom: 30px;
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
}

.input-section h3 {
    margin-bottom: 15px;
    color: var(--secondary-color);
}

label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
}

input[type="text"],
select {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #dddddd;
    border-radius: 5px;
    box-sizing: border-box;
}

button {
    margin-top: 20px;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
    font-size: 16px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

.result-section {
    margin-top: 30px;
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
}

.graph-section {
    margin-top: 30px;
    text-align: center;
}

#dimension-select {
    margin-bottom: 20px;
}

.hidden {
    display: none;
}